Buy the G2500 unless your site needs the Onyx's larger screen and cleaner front. Both machines share a 56.3 by 15.8 inch footprint, the same dispenser options, and a UL291 vault, so size and cash capacity do not separate them. The Onyx costs $186 more. Choose the wall-mount Onyx-W when you have no floor space.
Which Genmega ATM should you buy?
Buy the G2500 for convenience stores, grocery stores, and any site where price decides. Buy the Onyx for bars, nightclubs, casinos, and upscale counters. Buy the Onyx-W when floor space runs out.
| Your site | Buy | Why |
|---|---|---|
| Convenience store, grocery store, or hotel lobby | G2500 | Same footprint and dispensers as the Onyx for $186 less |
| Bar, nightclub, casino, or upscale retail counter | Onyx | 10.2-inch screen, reflective bezel, and a 12-inch touchscreen option |
| No floor space, wall or countertop | Onyx-W | Hangs on a wall or sits on a counter at 10.9 inches deep |
| High volume, many refills | G2500 or Onyx | Both take up to four 2,000-note cassettes |
| Exterior wall or storefront opening | Neither | Look at the GT3000 or GT5000 through-the-wall models |
Convenience store, grocery store, or hotel lobby
Bar, nightclub, casino, or upscale retail counter
No floor space, wall or countertop
High volume, many refills
Exterior wall or storefront opening
How do the Onyx and G2500 differ?
The Onyx has a larger 10.2-inch screen, a reflective front bezel, and a 12-inch touchscreen option. The G2500 has an 8-inch screen with a 10.2-inch touchscreen option. Inside, both use the same dual-core controller, the same 1,000-note and 4 x 2,000-note dispenser options, and a UL291 vault.
| G2500 | Onyx | Onyx-W | |
|---|---|---|---|
| Mounting | Floor-standing | Floor-standing | Wall or countertop |
| Screen | 8 in, 10.2 in touch optional | 10.2 in, 12 in touch optional | 10.1 in |
| Cash capacity | 1,000 notes, up to 4 x 2,000 | 1,000 notes, up to 4 x 2,000 | 1,000 notes |
| Receipt printer | 2 in, 3 in optional | 2 in, 3 in optional | 2 in |
| Size (H x W x D) | 56.3 x 15.8 x 22.6 in | 56.3 x 15.8 x 22.2 in | 19.7 x 26.8 x 10.9 in |
| Weight | 197.6 lb | 198 lb | 125.9 lb |
| List price | $2,559 | $2,745 | $2,969 |
Genmega G2500
Genmega Onyx
Genmega Onyx-W
For dimensions, weights, and ADA clearances across the Genmega and Hyosung lineup, read our ATM dimensions and specs compared guide. If you are weighing a Hyosung too, see Genmega G2500 vs Hyosung Halo II.
Is the Onyx screen worth $186?
The Onyx screen is wider and sharper, at 1280 x 800 against 800 x 480 on the G2500. A larger screen changes how the machine looks and how much ad content it shows. It does not change how much cash the machine holds. Our ATM screen size guide covers when size matters.
How do EMV and NFC compare?
Both machines take an EMV card reader. Order EMV with the machine, because card networks moved fraud liability to non-EMV ATMs in 2016 and 2017. Retrofit kits cost $295 for the G2500 and $329 for the Onyx, and the Onyx kit also covers the Onyx-W.
NFC tap needs an upgrade kit. The G2500 kit depends on your bezel revision and serial range, and one kit covers the Onyx, Onyx-W, and C6000. The Onyx kit shows sold out at the time of writing, so check stock first. Tap results depend on your processor too. Columbus Data and Digital Network Solutions support phone, watch, and card tap, while Switch Commerce supports card tap but not phone or watch. If a tap fails, our guide to why an ATM's NFC reader is not working walks through the causes.
Which locations suit the G2500?
The G2500 suits high-traffic indoor sites: convenience stores, grocery stores, bars, hotels, casinos, and event venues. It carries an illuminated sign and an optional LED topper for visibility. Its operating range is 45 to 95 degrees Fahrenheit, so it needs a climate-controlled spot.
Choose the G2500 when budget decides and the site does not need a showpiece. Laundromats and other cash-driven small stores fit that profile, and our laundromat ATM guide shows how those sites earn.
When should you skip the G2500?
Skip it for exterior walls and unprotected entrances. Through-the-wall units suit those sites. Our through-the-wall ATM installation guide covers cost and compliance.
Which locations suit the Onyx and Onyx-W?
The Onyx suits indoor, high-traffic sites where looks matter: bars, nightclubs, casinos, retail counters, gas stations, and covered vestibules shielded from direct weather. The Onyx-W suits sites with no floor space, where it hangs on a wall or sits on a counter.
Where does the Onyx earn its price?
Put the Onyx where customers see the machine before they use it. The reflective bezel, guidance lighting, and optional LED topper help it stand out in a crowded room. The 12-inch touchscreen option suits venues that want a tap-first experience. Our gas station and convenience store guide covers high-traffic fuel sites.
When should you choose the Onyx-W?
Choose the Onyx-W for space, not for features. It measures 19.7 by 26.8 by 10.9 inches and weighs about 126 pounds, so the wall or counter must carry that load into studs, masonry, or a reinforced surface. You set the mounting height, and the highest operable part must sit at or below 48 inches for ADA reach.
The Onyx-W costs $410 more than the G2500. It holds one 1,000-note cassette, prints on a 2-inch printer, and runs an older controller than the floor models. A 2,000-note Onyx-W exists with different dimensions, so confirm the version before you plan the wall. Our guide to wall-mounted vs floor-standing ATMs covers the tradeoffs.
How much cash can each ATM hold?
The G2500 and Onyx offer the same two dispensers: a 1,000-note removable cassette (SCDU) or up to four 2,000-note cassettes (HCDU), for 8,000 notes at the top end. The Onyx-W takes one 1,000-note cassette.
Should you choose SCDU or HCDU?
Choose the SCDU for low or moderate volume, and the HCDU when refill trips cost you more than the extra hardware. In $20 notes, 1,000 notes is $20,000 and 8,000 notes is $160,000, and most sites load far less than the maximum. Our cassette count guide shows how to match cassettes to your refill schedule, and our comparison of self-loading vs armored car covers who loads the cash.
Are parts and repair available for both?
Yes. ATMTrader's Repair Center stocks parts for the G2500 and the Onyx. It repairs Genmega cassettes and dispensers, with standard repair pricing from $150 for a 1K or 2K cassette and $235 for a dispenser. Check the Repair Center for current prices.
What differs between the two for parts?
Front bezels differ. ATMTrader lists a G2500 door bezel at $146, a G2500 front bezel for the old revision at $175, and an Onyx front bezel at $156. The G2500 has old and new bezel revisions, so match your serial number before you order bezel or NFC parts. For the Onyx-W, ask the team to confirm parts for your serial. Our ATM parts compatibility guide explains how to confirm a fit, and our Genmega ATM not working guide lists first checks for both models.
What does each ATM cost in total?
List prices are $2,559 for the G2500, $2,745 for the Onyx, and $2,969 for the Onyx-W. The $186 gap between the G2500 and the Onyx equals about 11 to 20 days of net income at a convenience store or laundromat earning $280 to $520 a month, based on our owning an ATM guide.
| Cost | G2500 | Onyx | Onyx-W |
|---|---|---|---|
| Machine list price | $2,559 | $2,745 | $2,969 |
| EMV retrofit kit, if not ordered with the machine | $295 | $329 | $329 |
| NFC upgrade kit | $389 for new bezel revision, higher for old revision | $389, one kit with the Onyx-W and C6000 | $389, same kit |
| Lock upgrade | Optional A-Series or Cencon | Optional A-Series or Cencon | Optional A-Series or Cencon |
Genmega G2500
Genmega Onyx
Genmega Onyx-W
ATMTrader ships new ATMs free to the 48 contiguous states, and Level 1 safes carry separate freight terms. Machines already in US inventory keep their import cost, so read our ATM tariffs guide before you time a purchase. Our ATM locks and keys explained guide covers lock options and keys.
Not sure which machine fits your counter? Send the ATMTrader team your location type, floor space, and monthly customer count, or call (855) 286-2286, Monday to Friday, 8 AM to 4:45 PM PT. Browse the full Genmega ATM collection or the ATM machines collection to compare more models.
Frequently asked questions
What is the difference between the Genmega Onyx and the G2500?
The Onyx has a 10.2-inch screen, a reflective front bezel, and a 12-inch touchscreen option. The G2500 has an 8-inch screen with a 10.2-inch touchscreen option. Both stand 56.3 inches tall, use the same dispenser options and UL291 vault, and run the same dual-core controller. The Onyx costs $186 more.
Is the Genmega Onyx better than the G2500?
Neither is better in every location. The Onyx suits bars, nightclubs, casinos, and upscale counters where the larger screen and cleaner front matter. The G2500 suits convenience stores, grocery stores, and other sites where price decides. Cash capacity and size match.
How much do the Genmega Onyx and G2500 cost?
ATMTrader lists the G2500 at $2,559, the Onyx at $2,745, and the wall-mount Onyx-W at $2,969. Add an EMV kit if you do not order EMV with the machine, plus any NFC or lock upgrade. Check the product pages for current prices.
Do the Onyx and G2500 hold the same amount of cash?
Yes. Both offer a 1,000-note removable cassette (SCDU) or up to four 2,000-note cassettes (HCDU), for 8,000 notes at the top end. The Onyx-W takes one 1,000-note cassette, and a 2,000-note Onyx-W has different dimensions.
Do the Genmega Onyx and G2500 support EMV and NFC?
Both take an EMV card reader, which you should order with the machine. NFC tap needs an upgrade kit. The G2500 kit depends on your bezel revision and serial range, and one kit covers the Onyx, Onyx-W, and C6000. Check stock and processor support before you order, starting with our NFC card reader collection.
Can the Genmega Onyx go outdoors?
No. ATMTrader lists the Onyx for indoor, high-traffic sites and covered vestibules protected from direct weather. The G2500 operates between 45 and 95 degrees Fahrenheit. For an exterior wall, look at the through-the-wall GT3000 or GT5000, and read our through-the-wall ATM installation guide.
What is the Genmega Onyx-W and when should I buy it?
The Onyx-W is a wall-mount or countertop version of the Onyx with a 10.1-inch screen and a 1,000-note cassette. Buy it when you have no floor space. It measures 19.7 by 26.8 by 10.9 inches, weighs about 126 pounds, and needs a wall or counter that carries that weight.
Are parts available for both machines?
Yes. ATMTrader's Repair Center stocks parts for the G2500 and the Onyx, and Genmega cassette and dispenser repair is available. Match your serial number before you order bezels or NFC kits, because the G2500 has old and new bezel revisions.
Which Genmega ATM is best for a convenience store?
The G2500 fits most convenience stores on price and features, and the Onyx fits stores that want a larger screen. Both list convenience stores as a target location. Choose by budget and counter space, then size the dispenser to your refill schedule. Our gas station and convenience store guide covers the rest.
Which Genmega ATM is best for a bar or nightclub?
The Onyx. ATMTrader lists it for bars, nightclubs, and casinos, and its 10.2-inch screen and reflective bezel stand out in a busy room. The G2500 lists bars and casinos too, so choose it if budget matters more than looks.
